Doffer.



H. 11. GOLMAN & B; A. PETERSON;

DOPE-ER.

APPLIG'ATIORIILED NOV. 5, 1908. 983,858. Patented Feb.'?, 1911.

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H. D. GOLMAN 61 B. A. PETERSON.

DOFPER.

APPLIGATION TILED NOV. 5,1908. 7 983,858. Patented Feb.7, 1911.

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DOFFER.

APPLICATION FILED NOV. 5, 1908.

983,858. Patented Feb.7, 1911.

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DOFPER.

APPLIGATION PILED'1TOV.5, 190a.

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DOFFER.

APPLIUATION FILED NOV. 5, 1908.

Patented Feb. 7, 1911.

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' H. D. GOLMAN & B. A. PETERSON.

DOFFER.

APPLICATION FILED NOV. 5, 190B.

Patented Feb. 7, 1911.

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MAN & B. A. PET FE N.

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DOFFER.

APPLICATION FILED NOV. 5, 1908.

Patented Feb. 7

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HOWARD D. COLMIA N AND BURT A. PETERSON, 0F ROCKFORD, ILLINOIS, ASSIGNORS TO HOWARD COLMAN, LUTHER L. flVIILLIEB, AND HARRY A. SEVERSON, GOPARTNERS DOING BUSINESS AS BARBER-COLMAN COMPANY, OF ROCKFORD, ILLINOIS.

DOFFER.

Specification of Letters Patent.

Patented Feb. '7, 1911.

Application filed November 5, 1908. Serial No. 461,123.

T 0 all whom it may concern:

Be it known that we, HOWARD D. COLMAN and BURT PETERSON, citizens of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Dofi'ers, of which the following is a specification.

This invention refers to dofiers and ap plies particularly to a machine for removing the filled bobbins from the spindles of a spinning frameand for placing empty bobbins upon the empty spindles. I

One'of the objects of this invention is to provide simple means for supporting a doffer upon and operatively connecting it with a spinning frame,a means which shall utilize ,feat-ures of construction present in the standard spinning frame, and which shall not require any alterations in the construction of the frame.

Another object of the invention is to provide an improved magazine for doflers, one that is compact, interchangeable, and readily removable from and attachable to the dofl er.

Another object is to provide an improved means for feeding bobbins from the magazine to the donning apparatus.

Another object is to provide a shear for severing the thread. joining the bobbin with the spindle from which it has been dofled.

A further object is to provide a positivemeans for placing a bobbin upon a spindle.

A. further object of the invention is to produce a dofier which shall be certain in its action, not liable to derangement, and which may be readily handled and operated by a single operative. With this object in view, we have simplified the mechanisms as much as possible, reduced the size and weight of the whole machine, and particularly have reduced the mass of the reciprocating parts to aminimum.

In the accompanying drawings Figure 1 is a sideelevation of a dofter embodying the features of our invention. In this figure a. portion of the spinning frame is shown in section, and the means for attaching the doli'er to the spinning frame is illustrated. Fig. 1 is a detail view of said attaching means. Fig. 2 is a front side elevation of I said dotting machine, the upper portion of zine is removed from the doffer.

side view, showing the means for moving the dotting tube, the donning tube and the bobbin-seater, the donning tube and a portion of the dofling tube being represented in vertical central section. Fig. 6 is a fragmentary side elevation of the donner tube, the lower portion of said tube being broken away to illustrate a means for supporting an empty bobbin in said tube. Fig. 7 1s a fragmental side elevation of the doifer tube,

showing its telescoping foot portion and the thread shear carried thereby. F ig, 8 is a fragmental vertical central section through the doifer tube,v illustrating the dogs for gripping a filled bobbin and preventing downward movement of said bobbin in said tube. Fig. 9' is a section on line 99 of Fig.

0, showing the bobbin-engaging dogs and the springs for holding them 1n engagement with the thread upon the filled bobbin. 'Fig. 10 is an enlarged fra'gmental view representing the dofi'er tube in its lowermost, position,

its foot resting upon the ring rail, and the shear being closed by the relative movement between the foot and the doffer tubes. Fig. 11'is a longitudinal vertical section through the magazine for empty bobbins, showing the bobbin-feeding chain by means of which the bobbins are transferred one at a time from said magazine to the donner tube. Fig; 12 is a fragmental vertical longitudinal section through said bobbin magazine, showing the'removable bail for holding the bobbins in position in the magazine when said maga- Fig. 13 is a fragmental end view of the lower portion of the removable bobbin magazine showing the projecting end of the removable bail. Figs. 14, 15 and 16 are views illustrating the filled bobbin in thevseveral positions it assumes while being dotted. Fig. 14a; a view of the filled bobbin when it is first lifted by the doifer tube. Fig. 15 represents the dot fer tube and the removed bobbin as having been fed forward one step in the progress of the machine, and ig. 16 shows the (lotfor tube in position upon the next succeeding bobbin, and an empty bobbin placed upon the last preceding spindle, to wit, the one shown in Fig. 15. Fig. 17 is a perspective view ofthe slide that carries the dofiing tube, the donning tube and the bobbin-seater, said tubes and bobbinseater also being shown in said figure.

In the present embodiment of this invention we have provided a portable machine susceptible of being moved along the sides of a ring spinning frame. The frame of the machine is provided with wheels to enable the operator to roll 'it about the mill, but whenin operation the machine is car ried upon a track fixed with relation to the spinning frame. The machine is caused to progress along the spinning frame either by a crank or by direct pressure applied by the operator to the side of the machine. The operative parts of the machine are kept in step with the spinning spindles by means of a star wheel which meshes with the lower ends of the spindle-bases. The machine being relatively small, it can readily be lifted into and out of engagement with the spinning frame and moved along the frame by one operative. In practice the doifer is moved from one spinning frame to another when the bobbins on said frames are ready for the dofiing operation, the empty bobbin magazine being replaced by a filled magazine whenever that is necessary in the operation of the machine.

In this specification we will refer to our invention as a dofler, or dotting machine, although .it is apparent that said machine performs both the dotting and the donning operation.

In the. drawings, 1 refers to a spinning frame, 2 to the bolster rail, 3 to the spindlebases, 4 to the ring rail, 5 to the thread-,

guide board, 6 to the thread guides, 7 to the drawing rolls, and 8 to the bobbins containing the roving.

The embodiment of our invention which has been selected for illustration comprises a carriage, the frameworkof which is indicated in the drawings, by the numeral 9. The rear side of the carriage, to wit, the side which in operation is toward the spin ning frame, has fixed to it'an arm 10 which supports at its ends two rollers 11 adapted to run upon a suitable track 12 attached to the bolster rail. This track consists of a channel bar, and it is secured to the spinning frame by means of arms 12 riveted or otherwise fixed to the bar, the rear ends of said arms being forked to slip .onto the spindle-basesB. The nuts 12 used in securing the spindle-bases to the bolster rail are utilized in attaching the arms 12 to said rail, said nuts being turned up against the under sides of said arms. The arms 12 are provided at sufficiently frequent intervals to support the track 12 rigidly. To hold the carriage upright with relation to the spinning frame, an arm 13 is provided, said arm being rigidly secured to the carriage and carrying a roller 14: arranged to travel along the forward edge of the lower flange 15 of the bolster rail. To adapt the machine to be conveniently moved from one spinning frame to another, it is herein shown as provided with a supporting frame comprising two side members 16 and a connecting bottom member 17. Near their lower ends the side members 16 carry supporting rollers 18. The supporting frame is adapted to receive and carry a box 19 (Fig. 4) into which the filled bobbins are dropped by the mechanism after said'bobbinshave been removed from the spindles of the spinning frame. The box 19 rests upon the lower bar 17 of the supporting frame and is held in position therein by means of an arm 20 secured to the carriage frame 9, the hooked lower end of said arm engaging in an opening 21 near the upper edge of said box. The box may be readily removed from the dofi'er by disengaging said box from the hooked arm 20. When the dofler is mounted upon a spinning frame, the rollers 18 and the box 19 are clear of the floor.

-The carriage 9 supports a dofiing tube 22, a donning tube 23 and a bobbin-seater 24, said tubes and bobbin-seats): being arranged side by side, the distance between the centers of said tubes, as well as the distance between the center of the donning tube and the operative portion of the bobbin-seater, being equal to the distance between the centers of adjacent spindles. In operation the carriage Qhas a. continuous movement, along-the spinning frame, while the dotfing tube has an intermittent movement along the spinningframe, said tube moving downward over a filled bobbin and rising with said bobbin during each pause between the steps of lts progressive move-- mentalong the spinning frame. The donning tube also moves intermittently along the spinning frame, pausing above each spindle while a pobbin is being ejected from the tube onto sa (1 spindle. The movements of'the bobliin-seater are similar to those of the dotting tube. To obtain these various movements, we have provided mechanism which is herein shown as comprising a slide frame 25 (Fig. 17) consisting of two side members 26 of open form rigidly secured together at top and bottom by means of two transverse members 27.

Upon their forward edges the side members 26 carry transvers bars 28 and 29, said bars having ball races formed on their opposing faces. The carriage frame 9 comprises transverse arms 30 carrying bars 31 providing ball races complementary to the ball races in the bars a bar.

28 aud29. The bar is herein shown as fixed to the slide frame 25, while the bar 29 is adjustably mounted in orderv to permit of an adjustment of the ball bearings for said slideframe. The bar 29 is secured to the slide frame by means of screws 32 eX- tending through elongated openings in said bar. Adjusting screws 33 seated in ears 3% upon the forward edges of the side members 26 bear at their upper ends against the bar 29. These adjusting screws are provided with lock nuts '35.

Thedofling' tube 22 and the bobbin-seater 24 are carried by a slide plate 36 (Figs. 5, 7 and 17) arranged for vertical movement in guide grooves 37 in the slide frame 25. To the forward side of the slide plate 36 is fixed a horizontally-extending channel bar 38, thev bobbin-seater 24 being in this instance attached to one end of said channel The means herein shown for reciprocating the slide frame horizontally with relation to the carriage frame, and for vertically reciprocating the slide plate 36 with relation to the; slide'frame 25 comprises a horizontal shaft 39 mounted in the carriage frame, To the outer end of the shaft 39 a crank 50 may be attached, if desired. The inner or rear end of said shaft has fixed thereto a cam disk 41 having in one face a cam groove 42 to receive a roller stud 43 carried by the slide frame 25, and having 'on its opposite face a roller stud 4 1 fitting'in, the channel bar 38.

i The weight of the slide plate 36 and the parts carried thereby is counterbalanced by the weighted-portion 45 (Fig. 5) of said cam disk. The contour of the cam groove 42 is such that the slide frame 25 is practically stationary. with reference to the spinning frame while a filled bobbin is beingremoved, and 'an empty bobbin is'being placed upon a spindle, and is then given a quick forward movement to place'the dofling tube, the donning tube and the bobbm-seater in register wlth succeed'mgspindles.

The dotting-mechanism is kept in step with suitable means, as, for eX-.

the spindles by j v I ample,ia 'fstar'wl eel'afi (Figs. 1, 2 and t) rotatably mounted upon "the carriage frame 9 in position to ngage'the spindle-bases 3 when the dofler is in operative relation toa s'pimiii'fg frame; The star wheel 46.n1ay

be provided with double teeth, or in other words, ,thefteeth or the star' wheel may be concave, asat l'f (Fig.4), to clear the rods, (not shown) extending vertically of the bolster rail'and carrying the ring rail. The

star wheelatG islierein "shown as geared to a vertical shaft 48 supported in the v carriage framefi; "which shaft is gea red to the hori-z zontalshaft'39 W The crank 40 may the mechanisms of the doifer, the star wheel 46 servingto keep said mechanisms. in, step be rotated to act ua-te l with the spindles; or the machine may be actuated by merely pushing it along the spinning frame, the star wheel 16 being ro-. tated by its engagement with the spindlebases. If desired, a handle 49 may be 2ttached to the machine at any convenient point.

stance, the collars 50 and 51 (Fig. 7) encircling said tube and secured to said slide plate. A shear-supporting member herein shown as in the form of a plate or bracket 52 (Fig. is arranged for movement toward and away. from the doiiing tube 22. In the present embodiment, the member 52 is supported from said dofling tube for sliding movement. relatively tothe tube. One method of connecting the member 52 to the dotting tube 22 is to attach said member to a The dofiing tube 22 is fixed to the slide plate 36 by any suitable means. as, for intube 22 as herein shown, said tube 22'" I telescoping with the tube 22. Preferably means is provided for moving the member 52 downwardly with relation to the tube 22, such as a coiled spring 54, such movement being limited by suitable means, as, for example, hooks 55 on the tube 22 engaging the lower end walls of slots 56 in the tube 22. Upon the lower side of the member 52 are two pins 5 3: that contact the ring rail when the dofi'er, tube is placed over a bobbin and serve to support the member 52 in proper relat-ion to the bobbin. On the member 52 is .a guard or guide extension 52 (Fig. 3) for a purpose to appear hereinafter. The tube 22 carries a means for. engaging filled bobbins, while the member 52 supports a thread shear.

The means just referred to for engaging filled bobbins, in the embodiment herein shown, comprises holding dogs 57 (Figs, 8, 9 and 10) with eccentric gripping faces, said dogs being pivotally mounted between cars 58 uponthe collar 51, and extending into the dolfer tube through elongated openings-59 in the tubes 22 and 22. The dogs in their downward movement strike against the collar 51, unless previously stopped by engagement with a filled bobbin, and their upward and outward movement is restrained by a coiled spring (30 surrounding the tube 22 and lying just above the ears The shear, in this instance, comprises a fixed blade 61 immovably attached to the member 52, and a pivotal blade 62 (Figs.v 7 and 10). The shear is normally held open by-a coiled spring 63 connected at one end with an arm 64 attached to the movable blade 62,. and at its other end to a suitable fixed point. The shear, as herein shown, is closed through the relative movement between the tube 22 and the member 52. The slide plate 36 carriesan arm '65. When the member 52 is stopped by striking the ring rail 4, the continued downward movement of the slide plate 36 carries the arm 65 into engagement with a finger 66 on the blade 62 and closes the shear. Any preferred means may be employed for preventing threads from fouling upon the shear or other projecting parts carried by the dotl'er tube; we have herein shown a guard pin 67 fixed the box 19. j The. tube 68 is secured to the carriage frame in any suitable manner. A guide 69 fixed to the slide frame 25 assists in guiding the bobbins from the vertically and horizontally reciprocating dofling tube into the relatively stationary tube 68.

The donning tube 23 is herein shown as fixed to the slide frame 25 by means of collar 70. Means is herein shown for temporarily supporting bobbins in the donning tube, which means in the present instance consists of two springs 71 attached to said tube, the free ends of said springs extending into the lower end of the tube in position to releas ably support the butt end of a bobbin. In one side of the tube, and at its lower end, is an opening 72, for a purpose to appear hereinafter. The donning tube has a flaring upper end 73 to receive empty bobbins.

The bobbins are ejected from the donning tube 23 by "means herein shown as comprising a dog 74 (Figs. 5 and 6) pivotally supported upon a bracket 75 fixed to-the slide )late 36, said dog movingin a vertical slot 76 in the donning tube. The dog 74 is moved into position to engage the tip ends of the bobbins by a spring 77 acting upon an arm 78 fixed with relation to said dog. The spring-actuated movement of said dog is limited by the engagement of the rear end thereof with a stop 79 on the bracket 75. \Vhen a bobbin is discharged into the donningtube from the magazine, the dog 74 yields to permit said bobbin to pass it, the descending bobbin being stopped by the springs 71. Upon the next downward movement of the slide'plate 36 the dog 74 engages the tip end .of the bobbin and ejects the latter from the tube 23.

The bobbin-seater 24, in the present con stnuction, consists ofa spring arm fixed to one end of. the channel bar '38, the free end of said arm being arranged to press upon the tip of a bobbin the donningtube 23 and the ejector dog 74. Empty bobbinsto take the place of those dofi'ed in the operation of the machine may be: carried in a magazine 80 (Figull) removably supported upon a frame 81 that is carplaced upon a spindle by ried by upwardly extending arms 82 above the carriage'frame 9. In the form herein shown the magazine 80 is a rectangular receptacle divided into a numberof vertical compartments by, means of partitions 83, which compartments, when the magazine is in place upon the dofier, are open at top and bottom. Bobbins are placed in the compartments by any suitable means (not shown) in a substantially horizontal position, all of the the magazine is being filled, the bobbins are held in place by suitable means, such as a wire bail 84, the two horizontal arms of which are adapted to lie in notches 85. and

tacle and partitions, said bail being removably held in place by means of an upwardly extending forward portion in loop form which is adapted to be supported upon a hook 87 secured to one, side of the magazine. The magazine is secured to the frame 81' by suitable means not herein shown in detail, which means may comprise latches 88 (Fig. 2) pivoted to the frame 81 and engaging pins 89 on the magazine.

Rotatably supported in suitable bearings in the frame 81 are two shafts 90, each carry ing two sprocket wheels 91, over which sprocket wheels extend the two endless chains 92. The upper runs of the chains are supported upon rails 93. The chains 92 are of usual construction, save that their pivots are elongated and serve to secure fingers 94 to said chains. The contour of the fingers '94 is such that single bobbins will lie between "chains. Guide plates 95 and guide wires 96 at the discharge end of the magazine direct the bobbins into a chute 97 secured to the uping the bobbins into the flaring upper end 73 of the horizontally reciprocating donning tube. Rotation 'may be imparted to one of the shafts by means of an endless chain 98 extending over a sprocket wheel 99 on the outer end of said shaft and over a sprocket the bobbins are released through the relative movement between said instrumentalities.

are ready to be dotted, the machine is stopped with the ring'rail in its lowermost position, the usual slack in the portion a of the threads extending between the drawing rolls and the traveler having been provided in the same way' as is commonlydone in butts being turned in one direction. When wheel 100 fixed with relation to a spur gear mentality, to wit, the conveye'r 92; and that Then the bobbins upon a spinning frame openings 86 in the lower edges of the recep-.

adjacent fingers upon the upper runs of the wardly extending arms 82,- said chute guidthe tbreadsrunning from the drawing rolls 'Z by 'merely pushing the dotling machine along the spinning frame. As the dothng tube moves downward over a'filled bobbin. the dogs 5? swing outwardly upon their pivots to pass the bobbin. On the u-pivardanovemeut of the tube. the inn'er roughened faces of the dogs 57 engage the yarn upon the bobbin and cause the filled bobbin to rise with the tube. As the tube is moved down upon successive bobbins. the bobbins previously surrounded by the tube are forced from the upper end of the tube, and being tipped forwardly as they emerge from the upper endof saidtube,

full into-the guide tube'GS, and by means of said tube are directed into the receiving box-19.-

. Referriugnoii" to Figs. 14:, 1'5 and 16: As the bobbin is tube 9.2, a few wrapsof'theportion b of the thread are transferred. from the bobbin to the'spind-le as seenin Fig. 14, so that when the empty bobbin is placed on the spindle the thread will be caught and held by it. As the slide frame 25 is moved forward with relation to the spinning frame, the tube 22 with the bobbin 'held in its lower end is moved into position over the next adjacentbobbin. theguard or guide 52 insuring by its plow-like action that thethread running to said bobbin shall not catch upon the up per end of the bobbin and be. broken.- is hen the tube 22 is'lowered onto the last mentioned bobbin. the thread portion brunnin'g from the previously dotted bobbin to the-Spindle from which 1t was removed en-i ters' theshear and is severed as the dotting tube completes its fdownward-movement.

Owing to thecircular form of the lower-end of the clotting device, the thread portion assumes a' straight line between its-spindle and the dotting-device,.as the latter is moved" laterally ma {from said spindle; consequently said thread portion is in'positio'n to.

enter the open shearas said shear descends,

Simultaneonsly yv'ith the'descent'bf the; doif-l ing tube and an nstant before-the shear is actuated, an empty bobbinis discharged from .t-hentub e 23 onto said spindle',' said empty bobbin clamping the-thread between itself iandthe spindle. The next, progresjsivelmovementofflthe slide frame 25 brings "the bobbinseater 24into vertical alinement 'wi'th the empty. bobbin just referred to,-s a-1d bobbin-seaterits next-downward move-:-

lifted off itsspindlc by theand a V ment pressing the bobbin firmly onto its spindle. The opening 72 in the side of the donning tube 23 is provided to afford additional clearance between the ejected bobbin and the tube.

in order to make the dolfer as light-running as possible, we preferably provide ballbearings for the various shafts, the supporting rollers and the reciprocating parts.

Certain features of our invention are claimed broadly in application Ser. No. lat-L698 filed by us on July 22, 1908.

Te would have it understood that We desire not to be limitedto the details ofconstruction'as herein shown and described, for various modificationswill occur to persons skilled in the art.

\Ve claim as our invention:

1. A doti'er for spinning frames comprising a carriage, and bobbin-engaging means mounted on the carriage and movableab ternately vertically and horizontally withrelation to said carriage in the vertical plane of the bobbin spindles.

A dotierfor spinnin frames comp rismg a carnage, and a do ng device mounted-lon the carriageand movable alternately tvertically and horizontally with relation to said carriage irr-the vertical-plane of. the 'bobbin spindles. a i

3. In a dofie'r for spinning frames, a carriage, and-means for assocmtingsa bobbin with a spindle, s'aid'meansbeingmounted on theearriage and being horizontally movable ivith relation tosald carriage 1n the fyertical plane, of the bobbin spindles.

4; In a dofi'er for spinning frames, a carriage, and a .bobbin-seat'er mounted on the earriageand movable horizontally with relation tmsitid'carriage in the vertical plane of the bobbin spindles.-

A dofier comprising a frame; a structure mounted to slideav-ltli relation to saidframe; a-- part mounted to slide with relation tosaid structure; a bobbin-engaging m eansearried by-saidz-part;- and means, for;

.moi' ine; said structure and said part .6.-'Th6 combination, with. a spinning -.fr am e .having'..a row-of spindle bases, of a b dofi'er and-means. for -'support-ing said dofier On-the spinning frame fonmovement longitudinally of said -.fran1e,.'said.dofi'er compr sing a framework,. artoothed wheel rota ably mo uited' in said framework, the

teeth of. smdawheel being-adapted: to e11- gage .said spindle'. .bases-, .;.bobbin ddfiing mechanism supported byasa'id framework,-

driving and timing connection between said wheel and said-dotting mechanism;= whereby when .saiddoti'er is' moved along the spinningfra'me the dofiing meeha r ytimed nism-tw-ill be actuated andprope with respect to tl1e"spindle s.-

- 7.11s 21 dofier .fo'nspinning; frames. a 1

frame a structure mountedilto-islide with relation to said frame; a part mounted to slide with relation to said structure; a hobbin-seater carried by said part; and means for movin said structure and said part.

8. A do%er comprising a frame; a structure mounted to slide horizontally with relation to said frame; a part mounted to slide vertically with relation to said struc ture; a bobbin-engagingmeans carried by said part; and means for moving said structure a-nd'said part. 7

9. A dofiier comprising a frame; a structure mounted to slide with relation to said frame; a partmounted to slide with relation to said structure; a dotting device carried by said part; a means carried by sa d structure for associating a bobbin with a spindle; and means for moving said structure and said part.

10. A dotfer comprising a' frame; a structure mounted to slide with relation to said frame; a part mounted. to slide with relation to said structure; a dotting device carried by said part; means carried by said structure for associating a bobbin with a spindle; a bobbin-seater carried by' said part; and means for moving said structure and said part.

11. A dofi'er for spinning frames comprising a carriage,bobbin-engaging means on said carriage, and arotatable element operatively connected with said bobbinrengaging means for moving said means alter-' nately vertically and horizontally with relation to said carriage in the vertical plane of the bobbin spindles.

12. A machine for placing bobbins upon the spindles of spinning frames comprising a carriage, means on said carriage for associating a bobbin with a spindle, and a 1'0- tatable element for horizontally reciproeating said means with relation to said carriage in the vertical plane of the bobbin spindles.

13. In a machine for placing bobbins upon the spindles of spinning frames comprisingacarriage, a bobbin-seater on said carriage, and a rotatable element operatively connected with said bobbin-seater for moving the latter vertically and horizontally with relation to the carriage in the vertical plane of the'bobbin spindles.

14. A doflt'er comprising a frame; a structure mounted to slide with relation to said frame; a part mounted to slide with relation to said structure; a bobbin-engaging means carried by said part; and a rotatable element operatively connected wit-h said structure and said part for moving them.

15. A dofler comprising a frame; a struc-' ture mounted to slide with relation to said frame: a part mounted to slide with relation to said structure; a bobbin-engag ;ing means carried by said part; a disk having a. ca rn groove therein; means attached to said structure for traveling in said groove; a channel bar attached to said part; and a crank pin carried by said disk and eugagsaid mechanism for driving the latter, said elementbeing adapted to engage the spindlebases of a spinning frame.

18. A doliing device for dofi'ers comprising a reciprocatory tube consisting of two telescoping sections, and a shear carried by said dofiing device and actuated by relative movement between said sections.

19. 'A dofiing device for dofl'ers compr1s,

ing a reciprocatory tube consisting of two telescoping sections, a. shear carried by one of said sections and actuated by relative movement between the sections, and bobbinengaging means carried by'one of said sections.

20. A dotting device for dofi'ers comprising a reciprocatory tube having an extension movable with relation to the member, a shear carried by said extension and actuated byrelative movement between the sections, and bobbin-engaging means carried by said tube adjacentto said extension. Y

.21. A 'dofiing'device fordoft'ers comprising a reciprocatory member having an extension at its lower end, said extension beingmovable with relation to the member, a shear carried by said extension and actuated by relative movement between the extension and said member, and means carried by said ex-' tension for spacing it above the ring rail of a'spinning frame. 1

22. A dotting device for dofi'ers comprising a reciprocatory member having an extension at its lower end, saidextension being movable with relation to said member, a

. shear carried by said extension and actuated by relative movement betweensaid member and said extension, and a guard device carried by said extension in operative relation to said shear.

23. A dofling device for dofi'ers comprising a reciprocatory member having an extension at its lower end, said extension being movable withrelation to said member, and a shear actuated by relative movement between said member andsaid extension 24:. A dofiing device for dofi'ers comprising framework having carrying rollers, a

timing wheel rotatably supported in the lower portion of'said frameworkat the rear side thereof. a vertical shaft in said framework having a gear connection with said wheel, a horizontal shaft in said framework having a gear connect-ion with said vertical shaft. a driving crank on the forward end of said horizontal shaft, a rotary actuating 'mcmber fixed on the rear end of saidhori zontal shaft, and dotting mechanism supported on the rear side "of said framework and operatively connected with said actuating member.

27. In a dofier, in combination, a framework; a structure mounted on said framework for horizontal reciprocation; a part mounted on said structure for vertical reciprocation; a doifer device attached to said part to"reciprocate vertically therewith; a donning tube attached to said structure to reciprocate horizontally therewith; a device attached to said vertically reciprocatory partfor assisting in the discharge of bobbins from said donning tube; and means carried by said framework for reciprocating said structure and said part.

2%. In a dofler. in combination, a framework; a structure mounted on said framework for horizontal reciprocation; a part mounted on said structure for vertical reciprocation; a dofi'er device attached to said part to reciprocate vertically therewith; a donning tube attached to said structure to reciprocate horizontally therewith; a device attached to said vertically reciprocating part i for assisting in the discharge of bobbins from said donning tube; a bobbin-seater attached to said vertically reciprocating part; and means carried by said framework for reciprocating said structure and said part.

29-. A reciprocatory dofling device having an extension at its lower end, said extensionbeing movable with relation to said device, a shear carried by saidextension, means for opening said shear, and means moving with said device adapted to close said shear.

30. In a dofl'er. in combination, a supporting framework having carrying rollers; ,a. timing and driving Wheel rotatably support-- ed in the lower portion of said framework at the rear side thereof; a vertical shaft in i saidframework having a gear connection with said wheel; a horizontal shaft in said framework having a gear connection with said vertical shaft; .a disk fixed on the rear end'of said horizontal shaft; a structure mounted on the rear side of said framework for horizontal reciprocation; apart mounted .on said structure for vertical reciprocation;

a dofier device attached to said part to reciprocate vertically therewith; a donning tube attached to said strnctureto reciprocate horizontally therewith, a device attached to said 'vertically reciprocating part for assisting in the discharge of bobbins from said donning tube; a bobbin-seater attached to said vertically reciprocating part; and operating connections between'said disk and the horizontally reciprocato'rystructure and the vertically reciprocatory part for reciprocating them.

31. In a doifer, a bobbin-magazine, and means moving transversely of the bobbins in said magazine for removing them from the magazine and constantly supporting the bobbins remaining in the magazine.

32. In a dofi'er, a bobbin-magazine having a plurality of compartments therein, said Y compartments having open lower ends,'and a conveyor moving transversely beneath said compartments and constantly supporting the bobbins remaining in said compartments and adapted to engage and remove bobbins.

33. A doffer comprising a means for engaging a: filled'bobbin; a conduit for filled bobbins movablewith said engaging means; and arelatively stationary bobbin receptacle communicating with the discharge end of said conduit.

34:. A doffer comprising a reciprocatory means for engaging a filled bobbin; a. tube rcciprocating with said'engaging means and arranged to receive the bobbins engaged by said engaging means for conducting them away from said engaging means; and a relatively stationary bobbin'receptacle comn1unicating with said tube. 4

35. .In adoffer, a stationary bobbin magazine, and an endless bobbin conveyer arranged beneath said magazine, and operating in a direction transverse to the bobbins in the magazine, for removing bobbins from the magazine.

36. In a dofier, a stationary bobbin magazine having an open lower end, and means for removing bobbins from the magazine, said; means being arranged beneath said magazine and serving. as a bottom for the magazine to constantly support the bobbins remaining in the magazine.

37. A doffer arranged to travel longitudinallv of the front of a spinning frame, comprising a framework, operating mechanism carried by said' framework, a bobbin-magazine mounted stationarily upon the framework. Said magazine having an open lower I point adjacent to and above the line of from the magazin "veyer operating beneath said magazine for end, and means beneath the magazine for removing bobbins from the magazine, saidi means serving as a bottom for the magazine"! to. support the bobbins remaining in the 4. magazine.

38. In a doffer, a framework, a bobbinmagazine, the framework having at its. upper end a-seat upon which the bobbinmagazine may be removably'placedy'and means carried by "said framework beneath said seat and movable transversely of the bobbins in the magazine for removing them 39. In a doffer, a framework, a magazine having a plurality of bobbincontaining compartments therein, the framework having at its upper end a seatupon which :the magazine may-be rem'ovably placed, and means carried by said framework beneath said seat and movable transversely of the bobbin compartments for removing the bobbins from the magazine. 'i

4.0. Ina dotfer, a framework, an'elevated bobbin-magazine stationarily supported by said framework, donningmechanism carried by said framework, a tube in said framework leading from a point adjacent .to and below said magazine to said donning mechanism, and means for moving bobbins from the magazineto'said tube. f

'41. In adotfer, a framework. a bobbin magazine stationarily supported by said. framework, donningmechanism carried b 7 said framework, a tube in said framework leading from a point adj acentto said magazine to said donning mechanism, and 'a conr'emoving bobbins from the magazine and placing them in said tube.

42. In a dofl'er arranged for movement longitudinallyof the front of'a spinning frame, a framework, an elevated bobbin magazine stationarily supported by said framework, a tube leading from a point near the lower part of the magazine to a spindles on the spinning frame, and means for moving bobbins from-the magazine and depositing them in the upper part of the tube.

43. In a doifer, a bobbin magazine, means located below the magazine and serving to support the bobbins remaining in the maga zinc, and means for causing relative movement between the magazine and said means, to release bobbins" from said magazine.

44. In a dofter, a. carriage arranged for movement longitudinally of the front of: a spinning frame; donning mechanism on the' carriage; means on said carriage for holding bobbins, said means comprising two instrumentalities, one superposed upon the other, the lower one serving to support the bobbins; means for causing relative movement between saidinstrumentalities longit-udinallyof the spinning frame, such move m'ent causing the lowerinstrumentality to release a bobbin; and means for guiding the.

released bobbin to the donning mechanism. 45. In a doft'er, an instrumentahty having spaces therein to contain bobbins, an instrumentality below the other instrumentality to support bobbins in said spaces, and means for causing relative movement between saidplaced upon said frameworkand having spaces therein to contain bobbins; and means carried by sald framework beneath said instrument-ality for supporting bobbins in said spaces. i

' 48. In a dofler, a carriage arranged for movement longitudinally of the front of a spinning frame; donning mechanism on the carriage: means on said carriage for'holding bobbins, said means'comprising two instrumentalities, 'one superposed upon the other,- the upper. one having spaces therein to contain bobbins, the lower instrumentality serving to supportbobbins located in said spaces; means for" causing relative movement. between said instrumentalities longitudinally of the spinning frame to effect-the dischargeof bobbins from said spaces; and a tube leading from a point near said instrumentalities to a point adjacent to,and above the line of spindles on the spinning frame, for receiving the released bobbins and guiding. them to the donning mechanism.

49. In a dofier, a vertically reoiprocatory bobbin-engaging means'adapted to lift a full bobbin off its spindle, and a thread-shear supported for vertical movement relatively to said bobbin-engaging means and actuated by such relative-movement,

50. In a dofler, a vertically reciprocatory bobbin-engaging means adapted 'to lift a full bobbin off its spindle, a thread-shear carried by said bobbin-engaging means and vertically movable with relation to said bobbin-engaging means, and means for actuating said shear through such relative move ment. v x 51. a doffer, a reciprocatory bobbinengaging means, a shear=supporting member supported by said bobbin engaging means ios for movement relatively to said engaging rotatable element adapteri to mesh with the means, a shear on said member, and means spindle-bases of a spinning frame.

attached to said bobbin-engaging means for I HOWARD D. COLMAN.

actuating said shear. BURT A. PETERSON.

5 52. A dofier comprising means for feed- Witnesses: ing the dof'fer along the front of a spinning. A. R. HANSTBOM, frame saici feeding means comprising a' L. A. CULVER.

It is hereby certified that in Letters Patent No. 983,858, granted February 7, 1911, upon the application of Howard D. Colman and Burt Peterson; of Rock-v ford, Illinois, for an improvement in Dotlers, an error appears in the grant requiring correction as follows: In the granting clause, line strike out the words their successors or assigns and insert the words copartners, doing Business as Barber-Colman Companij, of Rockford, IZZinois, their heirs or assigns; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signeci and sealed this 18th day of March, A. D., 1918.

may i o. cQBILLmGs.

Acting Commissioner of Patents.

Correction in Letters Patent. N0-983,858i

for movement relatively to said engaging rotatable element adapteri to mesh with the means, a shear on said member, and means spindle-bases of a spinning frame.

attached to said bobbin-engaging means for I HOWARD D. COLMAN.

actuating said shear. BURT A. PETERSON.

5 52. A dofier comprising means for feed- Witnesses: ing the dof'fer along the front of a spinning. A. R. HANSTBOM, frame saici feeding means comprising a' L. A. CULVER.

It is hereby certified that in Letters Patent No. 983,858, granted February 7, 1911, upon the application of Howard D. Colman and Burt Peterson; of Rock-v ford, Illinois, for an improvement in Dotlers, an error appears in the grant requiring correction as follows: In the granting clause, line strike out the words their successors or assigns and insert the words copartners, doing Business as Barber-Colman Companij, of Rockford, IZZinois, their heirs or assigns; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signeci and sealed this 18th day of March, A. D., 1918.

may i o. cQBILLmGs.

Acting Commissioner of Patents.

Correction in Letters Patent. N0-983,858i

It is hereby certified that in Letters Patent No. 983,858, granted February 7, 1911, upon the application of Howard D. Colman and Burt A. Peterson, of Rockford, Illinois, for an improvement in Dotfers, an error appears in the grant requiring correction as follows: In the granting clause, line 3, strike out the words their successors or assigns and insert the words copartners, doing business as Barber-Cotfl'zan Oompcmo, of Rockford, Illinois, their heirs or assigns; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 18th day of March, A. D., 1913.

C. C. BILLINGS Acting Commissioner of Patents.

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